21394125

素因数分解:

$3^4\times 5^3\times {\mathrm{2113}}^1$

素因数の和:2140

約数の個数: 40

約数和(自身を含む): 39903864

約数和(自身を除く): 18509739

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 125, 135, 225, 375, 405, 675, 1125, 2025, 2113, 3375, 6339, 10125, 10565, 19017, 31695, 52825, 57051, 95085, 158475, 171153, 264125, 285255, 475425, 792375, 855765, 1426275, 2377125, 4278825, 7131375, 21394125]

約数ペア:

[(1, 21394125), (3, 7131375), (5, 4278825), (9, 2377125), (15, 1426275), (25, 855765), (27, 792375), (45, 475425), (75, 285255), (81, 264125), (125, 171153), (135, 158475), (225, 95085), (375, 57051), (405, 52825), (675, 31695), (1125, 19017), (2025, 10565), (2113, 10125), (3375, 6339)]